adjectiveEtymology: French, noun, pair of inverted stamps, from tête head + -bêche, alteration of Middle French bechevet head against footDate: circa 1913
of or relating to a pair of stamps inverted in relation to one another either through a printing error or intentionally

tête-bêche — [[t]tɛtˈbɛʃ[/t]] adj. phi of or pertaining to a pair of stamps that have been printed with one stamp inverted • Etymology: 1870–75; &LT; F, =tête head +bêche, reduced from béchevet placed with the head of one against the foot of the other … From formal English to slang

tête-bêche — [tet′besh′] adj. [Fr &LT; tête, head + bêche, contr. &LT; béchevet, the head of one at the feet of the other (in bed)] designating a pair of postage stamps printed, purposely or in error, so that one is inverted in relation to the other … English World dictionary

Tête-bêche — In philately, tête bêche (French for head to tail , lit. head to head ) is a joined pair of stamps in which one is upside down in relation to the other, produced intentionally or accidentally. Like any pair of stamps, a pair of tête bêches can be … Wikipedia